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General C++ Programming - October 2017 (Page 10)

C++ - Accessing a variable in another class

Hello, I'm trying to access a public variable declared in another class, and making a mess of it. Help Please! Regards error: cannot declare variable 'graph...

[2 replies] Last: Hello Enoizat , Thanks for the explanation. I've resorted to plan 'B... (by alonso12)

by MegsD

question on VOID swapping

Hello im in an intro to c++ class and we were discussing void swapping which barely made any sense for me. The professor gave us an example that swaps 2 number...

[3 replies] Last: thanks (by MegsD)

by SoumyadeepRoy

meaning of size_t

I recently came across this keyword size_t,I read about it in the official C++ documentation but didn't quite able to get my head around it. I don't have much e...

[6 replies] Last: Thank u so much,I got it now :) (by SoumyadeepRoy)

by SSteven

Truncating a float to a specified number of decimal digits (1,2)

The ios.precision(n) function rounds a floating-point value rather than truncating it. To truncate a float to an int, we can, of course, cast it to an int. We ...

[29 replies] Last: Comedy gold. (by helios)

by Darkpony

Can anyone explain this bit shift to me...

Suppose I have two integers. Suppose int a = 7 and int b = 3. I know that a | b will be 0x7 because 0111 and 0011 will be 0111. But why does a|(b <<4) come out...

[2 replies] Last: FUCKING NAILING IT MAN THANKS!!! I totally get it even though 1011 is ... (by Darkpony)

by Lucas Fiorini

operator overloading

Hey guys, I'trying to overload the >> and << operators but a lot errors are coming up and I can't understand a thing. the word "objeto" means a struct; ...

[4 replies] Last: Thanks!! I didn't saw it before (by Lucas Fiorini)

by the lone programmer

Infinite display loop

I am writing a program that reads from a file a list of numbers and sorts them in ascending order. Here is my text file 802 3110 801 7025 890 3120 870 3303 84...

[1 reply] : So I figured it out. I removed my do while loop and it worked, but I d... (by the lone programmer)

by can5100

char input help

Removed.

[1 reply] : return name ; This is attempting to return the 31st element of the a... (by Repeater)

by ahoudali

float numbers

Create a program that asks the user for two float numbers. Then asks the user if they would like to: 1. multiply the numbers 2. divide the numbers Creat...

[1 reply] : duplicate post: http://www.cplusplus.com/forum/general/223019/ (by Chervil)

by ahoudali

help me :(

Create a program that asks the user for two float numbers. Then asks the user if they would like to: 1. multiply the numbers 2. divide the numbers Creat...

[1 reply] : Basic input and output: http://www.cplusplus.com/doc/tutorial/basic_io... (by Repeater)

by Ganado

Image editor - efficient pixel data

I'm making a simple image editor for fun. It has a feature that's analogous to having multiple frames/layers in Photoshop, memory-wise. I'm not expecting any Ph...

[10 replies] Last: You're describing software-based rendering. This is still possible (in... (by helios)

by bshawy2k

Do While Loop

I need help making this program work #include <iostream> using namespace std; int main() { int x=0, evenSum=0, oddSum=0, num; do ...

[1 reply] : Original code with code tags to aid legibility : [co de] your code... (by Chervil)

by gargamel

can someone help me im running into some problems

deleted

[4 replies] Last: All of those errors are linker errors which usually means that the fun... (by jlb)

by Frank14

The advantages of iterators

Hello all, I finished chapter 20 of the book " Programming Principle and Practice using C++ ". There is a postscript at the end of this chapter: " If we have ...

[5 replies] Last: Theory is fine but when there is an example (on the explained subject)... (by Frank14)

by mpansilu

Can I use cout statement in a void func in a Header class?

Below is the Header, I have trouble with. Anyways I cant use cout here, please give me some pointer on what to do. //Animation.h #pragma once class Anima...

[2 replies] Last: Thanks. I tried it and it worked. Thanks alot. (by mpansilu)

by Frank14

C++ and Linux

Hello guys, I'm an intermediate-level programmer of C++ and have recently started studying Qt, QML and OpenGL. Since they are mostly using C++, the task is not...

[8 replies] Last: Thank you all very much. I appreciate your help. (by Frank14)

by AB21

Help with ERROR statement please?

This is my assignment. Write a program that computes the quarterly average sales for a salesperson in a department store. Every three months, the store calcula...

[1 reply] : If you've removed the statement you're having problems with, how are w... (by AbstractionAnon)

by Brandon i

Calculate highest grades

I am creating a program that when you input a .txt and input an output file .txt also into the program the program reads which student has the highest and lowes...

[2 replies] Last: Thomas1965 how would i do that, and yes (by Brandon i)

by Corbenik

Loop won't break right

Hi folks! Got stuck on an assignment. It's 99% done and does what I need it to do except for one thing: I can't get the loop to break properly. #include <ios...

[2 replies] Last: Had to tweak it a little bit to fit my code, but it made SO much more ... (by Corbenik)

by shinigami2841

File handling problems for struct.

Hi guys. can someone help me? my problem is that i want to put the data i streamed to a file back to the struct but i dont know how to do that. heres my program...

[3 replies] Last: > what is stm stm is the name of the variable (of type 'reference t... (by JLBorges)

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